/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain OctagonDomain -i ../sv-benchmarks/c/product-lines/elevator_spec1_product17.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 23:41:35,222 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 23:41:35,224 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 23:41:35,260 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 23:41:35,261 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 23:41:35,263 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 23:41:35,266 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 23:41:35,269 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 23:41:35,270 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 23:41:35,275 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 23:41:35,276 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 23:41:35,277 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 23:41:35,277 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 23:41:35,280 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 23:41:35,282 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 23:41:35,283 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 23:41:35,284 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 23:41:35,284 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 23:41:35,286 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 23:41:35,291 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 23:41:35,292 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 23:41:35,293 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 23:41:35,294 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 23:41:35,295 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 23:41:35,301 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 23:41:35,302 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 23:41:35,302 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 23:41:35,302 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 23:41:35,303 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 23:41:35,303 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-02 23:41:35,304 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 23:41:35,304 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 23:41:35,305 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 23:41:35,305 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 23:41:35,306 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 23:41:35,306 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 23:41:35,306 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 23:41:35,307 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 23:41:35,307 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 23:41:35,307 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 23:41:35,308 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 23:41:35,312 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-02 23:41:35,348 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 23:41:35,349 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 23:41:35,349 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 23:41:35,349 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 23:41:35,350 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 23:41:35,350 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 23:41:35,350 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-02 23:41:35,350 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-02 23:41:35,350 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-02 23:41:35,350 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-02 23:41:35,351 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-02 23:41:35,351 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-02 23:41:35,351 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-02 23:41:35,351 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-02 23:41:35,352 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-02 23:41:35,352 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-02 23:41:35,352 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-02 23:41:35,352 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-02 23:41:35,353 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 23:41:35,353 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 23:41:35,353 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 23:41:35,353 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 23:41:35,353 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 23:41:35,353 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 23:41:35,353 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 23:41:35,354 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 23:41:35,354 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 23:41:35,354 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 23:41:35,354 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 23:41:35,354 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 23:41:35,354 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 23:41:35,354 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 23:41:35,355 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 23:41:35,355 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 23:41:35,355 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-02 23:41:35,355 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 23:41:35,355 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 23:41:35,355 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-02 23:41:35,355 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 23:41:35,355 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 23:41:35,355 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-02 23:41:35,356 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-02 23:41:35,587 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 23:41:35,611 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 23:41:35,613 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 23:41:35,614 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 23:41:35,615 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 23:41:35,616 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec1_product17.cil.c [2023-04-02 23:41:36,854 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 23:41:37,132 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 23:41:37,132 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product17.cil.c [2023-04-02 23:41:37,156 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/267c1482e/e39f479a5179480d86d4210c86daafe1/FLAGc6765ded9 [2023-04-02 23:41:37,172 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/267c1482e/e39f479a5179480d86d4210c86daafe1 [2023-04-02 23:41:37,175 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 23:41:37,176 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 23:41:37,189 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 23:41:37,190 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 23:41:37,192 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 23:41:37,193 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 11:41:37" (1/1) ... [2023-04-02 23:41:37,195 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@309a06d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:41:37, skipping insertion in model container [2023-04-02 23:41:37,195 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 11:41:37" (1/1) ... [2023-04-02 23:41:37,200 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 23:41:37,260 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 23:41:37,588 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product17.cil.c[27470,27483] [2023-04-02 23:41:37,699 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 23:41:37,709 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 23:41:37,751 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product17.cil.c[27470,27483] [2023-04-02 23:41:37,812 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 23:41:37,836 INFO L208 MainTranslator]: Completed translation [2023-04-02 23:41:37,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:41:37 WrapperNode [2023-04-02 23:41:37,836 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 23:41:37,837 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 23:41:37,837 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 23:41:37,837 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 23:41:37,847 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:41:37" (1/1) ... [2023-04-02 23:41:37,848 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:41:37" (1/1) ... [2023-04-02 23:41:37,899 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:41:37" (1/1) ... [2023-04-02 23:41:37,899 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:41:37" (1/1) ... [2023-04-02 23:41:37,945 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:41:37" (1/1) ... [2023-04-02 23:41:37,966 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:41:37" (1/1) ... [2023-04-02 23:41:37,972 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:41:37" (1/1) ... [2023-04-02 23:41:37,980 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:41:37" (1/1) ... [2023-04-02 23:41:38,000 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 23:41:38,000 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 23:41:38,001 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 23:41:38,001 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 23:41:38,001 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:41:37" (1/1) ... [2023-04-02 23:41:38,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 23:41:38,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:41:38,033 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-02 23:41:38,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-02 23:41:38,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 23:41:38,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 23:41:38,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2023-04-02 23:41:38,074 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 23:41:38,075 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2023-04-02 23:41:38,075 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2023-04-02 23:41:38,075 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2023-04-02 23:41:38,075 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2023-04-02 23:41:38,075 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2023-04-02 23:41:38,075 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2023-04-02 23:41:38,076 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2023-04-02 23:41:38,076 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2023-04-02 23:41:38,076 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2023-04-02 23:41:38,076 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2023-04-02 23:41:38,076 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2023-04-02 23:41:38,076 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2023-04-02 23:41:38,076 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2023-04-02 23:41:38,076 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2023-04-02 23:41:38,076 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2023-04-02 23:41:38,076 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-04-02 23:41:38,076 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2023-04-02 23:41:38,076 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2023-04-02 23:41:38,077 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2023-04-02 23:41:38,077 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2023-04-02 23:41:38,077 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2023-04-02 23:41:38,077 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2023-04-02 23:41:38,077 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2023-04-02 23:41:38,077 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2023-04-02 23:41:38,077 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2023-04-02 23:41:38,077 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2023-04-02 23:41:38,077 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2023-04-02 23:41:38,077 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2023-04-02 23:41:38,077 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2023-04-02 23:41:38,077 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2023-04-02 23:41:38,078 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2023-04-02 23:41:38,078 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2023-04-02 23:41:38,078 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2023-04-02 23:41:38,078 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2023-04-02 23:41:38,078 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2023-04-02 23:41:38,078 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2023-04-02 23:41:38,078 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2023-04-02 23:41:38,078 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2023-04-02 23:41:38,079 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2023-04-02 23:41:38,079 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2023-04-02 23:41:38,079 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2023-04-02 23:41:38,080 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2023-04-02 23:41:38,080 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-04-02 23:41:38,080 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2023-04-02 23:41:38,080 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2023-04-02 23:41:38,080 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2023-04-02 23:41:38,080 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__2 [2023-04-02 23:41:38,081 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__3 [2023-04-02 23:41:38,081 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__4 [2023-04-02 23:41:38,081 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2023-04-02 23:41:38,081 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2023-04-02 23:41:38,081 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2023-04-02 23:41:38,081 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2023-04-02 23:41:38,082 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2023-04-02 23:41:38,082 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2023-04-02 23:41:38,082 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2023-04-02 23:41:38,083 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2023-04-02 23:41:38,083 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2023-04-02 23:41:38,083 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2023-04-02 23:41:38,083 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-04-02 23:41:38,083 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2023-04-02 23:41:38,083 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2023-04-02 23:41:38,083 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2023-04-02 23:41:38,083 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2023-04-02 23:41:38,083 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2023-04-02 23:41:38,083 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2023-04-02 23:41:38,083 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2023-04-02 23:41:38,083 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 23:41:38,083 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2023-04-02 23:41:38,083 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2023-04-02 23:41:38,084 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2023-04-02 23:41:38,084 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 23:41:38,084 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 23:41:38,084 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 23:41:38,084 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 23:41:38,084 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-02 23:41:38,084 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2023-04-02 23:41:38,084 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2023-04-02 23:41:38,085 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2023-04-02 23:41:38,085 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2023-04-02 23:41:38,085 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2023-04-02 23:41:38,085 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2023-04-02 23:41:38,085 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2023-04-02 23:41:38,086 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2023-04-02 23:41:38,086 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__2 [2023-04-02 23:41:38,086 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-02 23:41:38,086 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-02 23:41:38,086 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2023-04-02 23:41:38,086 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-02 23:41:38,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-02 23:41:38,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 23:41:38,087 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-02 23:41:38,087 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2023-04-02 23:41:38,087 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 23:41:38,087 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2023-04-02 23:41:38,087 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2023-04-02 23:41:38,087 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 23:41:38,087 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2023-04-02 23:41:38,087 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2023-04-02 23:41:38,087 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2023-04-02 23:41:38,087 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2023-04-02 23:41:38,087 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2023-04-02 23:41:38,088 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-04-02 23:41:38,088 INFO L130 BoogieDeclarations]: Found specification of procedure test [2023-04-02 23:41:38,088 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-04-02 23:41:38,088 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2023-04-02 23:41:38,088 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2023-04-02 23:41:38,088 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2023-04-02 23:41:38,088 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2023-04-02 23:41:38,088 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2023-04-02 23:41:38,088 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2023-04-02 23:41:38,088 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2023-04-02 23:41:38,089 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2023-04-02 23:41:38,090 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-04-02 23:41:38,090 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2023-04-02 23:41:38,090 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2023-04-02 23:41:38,090 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2023-04-02 23:41:38,091 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2023-04-02 23:41:38,093 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2023-04-02 23:41:38,093 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2023-04-02 23:41:38,097 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2023-04-02 23:41:38,097 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2023-04-02 23:41:38,097 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2023-04-02 23:41:38,097 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2023-04-02 23:41:38,097 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2023-04-02 23:41:38,098 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2023-04-02 23:41:38,098 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2023-04-02 23:41:38,098 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2023-04-02 23:41:38,098 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2023-04-02 23:41:38,098 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2023-04-02 23:41:38,098 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2023-04-02 23:41:38,098 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2023-04-02 23:41:38,098 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2023-04-02 23:41:38,099 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2023-04-02 23:41:38,099 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2023-04-02 23:41:38,099 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2023-04-02 23:41:38,099 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__3 [2023-04-02 23:41:38,099 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2023-04-02 23:41:38,099 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2023-04-02 23:41:38,099 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__4 [2023-04-02 23:41:38,099 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2023-04-02 23:41:38,099 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2023-04-02 23:41:38,099 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2023-04-02 23:41:38,099 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-02 23:41:38,099 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2023-04-02 23:41:38,099 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2023-04-02 23:41:38,099 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2023-04-02 23:41:38,099 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2023-04-02 23:41:38,099 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2023-04-02 23:41:38,099 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2023-04-02 23:41:38,100 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2023-04-02 23:41:38,100 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2023-04-02 23:41:38,100 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2023-04-02 23:41:38,100 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2023-04-02 23:41:38,100 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2023-04-02 23:41:38,100 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2023-04-02 23:41:38,100 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2023-04-02 23:41:38,100 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 23:41:38,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 23:41:38,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 23:41:38,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 23:41:38,368 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 23:41:38,372 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 23:41:39,608 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 23:41:40,387 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 23:41:40,387 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-04-02 23:41:40,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 11:41:40 BoogieIcfgContainer [2023-04-02 23:41:40,391 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 23:41:40,394 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 23:41:40,394 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 23:41:40,396 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 23:41:40,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 11:41:37" (1/3) ... [2023-04-02 23:41:40,397 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61416089 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 11:41:40, skipping insertion in model container [2023-04-02 23:41:40,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:41:37" (2/3) ... [2023-04-02 23:41:40,397 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61416089 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 11:41:40, skipping insertion in model container [2023-04-02 23:41:40,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 11:41:40" (3/3) ... [2023-04-02 23:41:40,398 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product17.cil.c [2023-04-02 23:41:40,415 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 23:41:40,415 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 23:41:40,472 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 23:41:40,477 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5975525f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-02 23:41:40,478 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 23:41:40,484 INFO L276 IsEmpty]: Start isEmpty. Operand has 543 states, 317 states have (on average 1.5047318611987381) internal successors, (477), 344 states have internal predecessors, (477), 166 states have call successors, (166), 47 states have call predecessors, (166), 47 states have return successors, (166), 157 states have call predecessors, (166), 166 states have call successors, (166) [2023-04-02 23:41:40,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-04-02 23:41:40,503 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:41:40,504 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:41:40,504 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:41:40,509 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:41:40,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1442661082, now seen corresponding path program 1 times [2023-04-02 23:41:40,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:41:40,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091455766] [2023-04-02 23:41:40,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:41:40,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:41:40,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:41:41,630 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-04-02 23:41:41,631 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:41:41,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091455766] [2023-04-02 23:41:41,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091455766] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:41:41,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:41:41,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-02 23:41:41,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972864101] [2023-04-02 23:41:41,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:41:41,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 23:41:41,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:41:41,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 23:41:41,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-02 23:41:41,678 INFO L87 Difference]: Start difference. First operand has 543 states, 317 states have (on average 1.5047318611987381) internal successors, (477), 344 states have internal predecessors, (477), 166 states have call successors, (166), 47 states have call predecessors, (166), 47 states have return successors, (166), 157 states have call predecessors, (166), 166 states have call successors, (166) Second operand has 8 states, 7 states have (on average 7.857142857142857) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (23), 4 states have call predecessors, (23), 2 states have call successors, (23) [2023-04-02 23:41:42,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:41:42,048 INFO L93 Difference]: Finished difference Result 839 states and 1298 transitions. [2023-04-02 23:41:42,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-02 23:41:42,050 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.857142857142857) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (23), 4 states have call predecessors, (23), 2 states have call successors, (23) Word has length 115 [2023-04-02 23:41:42,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:41:42,068 INFO L225 Difference]: With dead ends: 839 [2023-04-02 23:41:42,068 INFO L226 Difference]: Without dead ends: 457 [2023-04-02 23:41:42,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-02 23:41:42,085 INFO L413 NwaCegarLoop]: 614 mSDtfsCounter, 34 mSDsluCounter, 3662 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 4276 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 23:41:42,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 4276 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 23:41:42,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2023-04-02 23:41:42,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 422. [2023-04-02 23:41:42,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 267 states have (on average 1.5393258426966292) internal successors, (411), 286 states have internal predecessors, (411), 113 states have call successors, (113), 44 states have call predecessors, (113), 41 states have return successors, (106), 103 states have call predecessors, (106), 105 states have call successors, (106) [2023-04-02 23:41:42,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 630 transitions. [2023-04-02 23:41:42,188 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 630 transitions. Word has length 115 [2023-04-02 23:41:42,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:41:42,189 INFO L495 AbstractCegarLoop]: Abstraction has 422 states and 630 transitions. [2023-04-02 23:41:42,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.857142857142857) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (23), 4 states have call predecessors, (23), 2 states have call successors, (23) [2023-04-02 23:41:42,189 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 630 transitions. [2023-04-02 23:41:42,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-04-02 23:41:42,196 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:41:42,196 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:41:42,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 23:41:42,196 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:41:42,197 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:41:42,197 INFO L85 PathProgramCache]: Analyzing trace with hash -2090973139, now seen corresponding path program 1 times [2023-04-02 23:41:42,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:41:42,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730797211] [2023-04-02 23:41:42,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:41:42,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:41:42,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:41:42,869 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-04-02 23:41:42,870 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:41:42,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730797211] [2023-04-02 23:41:42,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730797211] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:41:42,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:41:42,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 23:41:42,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322415856] [2023-04-02 23:41:42,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:41:42,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 23:41:42,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:41:42,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 23:41:42,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-02 23:41:42,873 INFO L87 Difference]: Start difference. First operand 422 states and 630 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 5 states have call successors, (28), 4 states have call predecessors, (28), 4 states have return successors, (24), 5 states have call predecessors, (24), 4 states have call successors, (24) [2023-04-02 23:41:45,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:41:45,514 INFO L93 Difference]: Finished difference Result 1275 states and 1973 transitions. [2023-04-02 23:41:45,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-02 23:41:45,515 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 5 states have call successors, (28), 4 states have call predecessors, (28), 4 states have return successors, (24), 5 states have call predecessors, (24), 4 states have call successors, (24) Word has length 120 [2023-04-02 23:41:45,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:41:45,522 INFO L225 Difference]: With dead ends: 1275 [2023-04-02 23:41:45,522 INFO L226 Difference]: Without dead ends: 906 [2023-04-02 23:41:45,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2023-04-02 23:41:45,526 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 1689 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 3344 mSolverCounterSat, 510 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1761 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 3854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 510 IncrementalHoareTripleChecker+Valid, 3344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-04-02 23:41:45,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1761 Valid, 609 Invalid, 3854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [510 Valid, 3344 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-04-02 23:41:45,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2023-04-02 23:41:45,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 879. [2023-04-02 23:41:45,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 879 states, 587 states have (on average 1.584327086882453) internal successors, (930), 622 states have internal predecessors, (930), 216 states have call successors, (216), 74 states have call predecessors, (216), 75 states have return successors, (216), 206 states have call predecessors, (216), 208 states have call successors, (216) [2023-04-02 23:41:45,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 1362 transitions. [2023-04-02 23:41:45,579 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 1362 transitions. Word has length 120 [2023-04-02 23:41:45,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:41:45,579 INFO L495 AbstractCegarLoop]: Abstraction has 879 states and 1362 transitions. [2023-04-02 23:41:45,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 5 states have call successors, (28), 4 states have call predecessors, (28), 4 states have return successors, (24), 5 states have call predecessors, (24), 4 states have call successors, (24) [2023-04-02 23:41:45,580 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 1362 transitions. [2023-04-02 23:41:45,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-04-02 23:41:45,582 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:41:45,583 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:41:45,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 23:41:45,583 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:41:45,583 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:41:45,583 INFO L85 PathProgramCache]: Analyzing trace with hash -79413911, now seen corresponding path program 1 times [2023-04-02 23:41:45,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:41:45,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691015936] [2023-04-02 23:41:45,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:41:45,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:41:45,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:41:45,870 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-04-02 23:41:45,870 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:41:45,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691015936] [2023-04-02 23:41:45,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691015936] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:41:45,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:41:45,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 23:41:45,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934412586] [2023-04-02 23:41:45,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:41:45,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 23:41:45,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:41:45,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 23:41:45,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-02 23:41:45,873 INFO L87 Difference]: Start difference. First operand 879 states and 1362 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) [2023-04-02 23:41:46,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:41:46,031 INFO L93 Difference]: Finished difference Result 1385 states and 2161 transitions. [2023-04-02 23:41:46,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 23:41:46,032 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) Word has length 124 [2023-04-02 23:41:46,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:41:46,038 INFO L225 Difference]: With dead ends: 1385 [2023-04-02 23:41:46,038 INFO L226 Difference]: Without dead ends: 901 [2023-04-02 23:41:46,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-02 23:41:46,041 INFO L413 NwaCegarLoop]: 594 mSDtfsCounter, 7 mSDsluCounter, 1746 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2340 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 23:41:46,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2340 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 23:41:46,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 901 states. [2023-04-02 23:41:46,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 901 to 891. [2023-04-02 23:41:46,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 891 states, 596 states have (on average 1.575503355704698) internal successors, (939), 631 states have internal predecessors, (939), 216 states have call successors, (216), 74 states have call predecessors, (216), 78 states have return successors, (222), 209 states have call predecessors, (222), 208 states have call successors, (222) [2023-04-02 23:41:46,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1377 transitions. [2023-04-02 23:41:46,089 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1377 transitions. Word has length 124 [2023-04-02 23:41:46,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:41:46,090 INFO L495 AbstractCegarLoop]: Abstraction has 891 states and 1377 transitions. [2023-04-02 23:41:46,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) [2023-04-02 23:41:46,091 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1377 transitions. [2023-04-02 23:41:46,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-04-02 23:41:46,093 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:41:46,093 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:41:46,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 23:41:46,093 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:41:46,093 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:41:46,094 INFO L85 PathProgramCache]: Analyzing trace with hash -720546751, now seen corresponding path program 1 times [2023-04-02 23:41:46,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:41:46,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379390028] [2023-04-02 23:41:46,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:41:46,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:41:46,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:41:46,645 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-04-02 23:41:46,645 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:41:46,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379390028] [2023-04-02 23:41:46,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379390028] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:41:46,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:41:46,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-02 23:41:46,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350184615] [2023-04-02 23:41:46,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:41:46,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 23:41:46,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:41:46,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 23:41:46,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-04-02 23:41:46,648 INFO L87 Difference]: Start difference. First operand 891 states and 1377 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 7 states have call successors, (29), 5 states have call predecessors, (29), 4 states have return successors, (25), 7 states have call predecessors, (25), 6 states have call successors, (25) [2023-04-02 23:41:48,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:41:48,893 INFO L93 Difference]: Finished difference Result 1876 states and 2908 transitions. [2023-04-02 23:41:48,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-02 23:41:48,894 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 7 states have call successors, (29), 5 states have call predecessors, (29), 4 states have return successors, (25), 7 states have call predecessors, (25), 6 states have call successors, (25) Word has length 128 [2023-04-02 23:41:48,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:41:48,902 INFO L225 Difference]: With dead ends: 1876 [2023-04-02 23:41:48,903 INFO L226 Difference]: Without dead ends: 1284 [2023-04-02 23:41:48,905 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-04-02 23:41:48,906 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 1386 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 3328 mSolverCounterSat, 443 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1548 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 3771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 443 IncrementalHoareTripleChecker+Valid, 3328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-04-02 23:41:48,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1548 Valid, 449 Invalid, 3771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [443 Valid, 3328 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-04-02 23:41:48,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1284 states. [2023-04-02 23:41:48,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1284 to 1234. [2023-04-02 23:41:48,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1234 states, 811 states have (on average 1.5277435265104808) internal successors, (1239), 863 states have internal predecessors, (1239), 306 states have call successors, (306), 108 states have call predecessors, (306), 116 states have return successors, (322), 298 states have call predecessors, (322), 298 states have call successors, (322) [2023-04-02 23:41:48,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1234 states to 1234 states and 1867 transitions. [2023-04-02 23:41:48,983 INFO L78 Accepts]: Start accepts. Automaton has 1234 states and 1867 transitions. Word has length 128 [2023-04-02 23:41:48,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:41:48,984 INFO L495 AbstractCegarLoop]: Abstraction has 1234 states and 1867 transitions. [2023-04-02 23:41:48,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 7 states have call successors, (29), 5 states have call predecessors, (29), 4 states have return successors, (25), 7 states have call predecessors, (25), 6 states have call successors, (25) [2023-04-02 23:41:48,984 INFO L276 IsEmpty]: Start isEmpty. Operand 1234 states and 1867 transitions. [2023-04-02 23:41:48,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-04-02 23:41:48,986 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:41:48,986 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:41:48,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-02 23:41:48,987 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:41:48,987 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:41:48,987 INFO L85 PathProgramCache]: Analyzing trace with hash 2005322650, now seen corresponding path program 1 times [2023-04-02 23:41:48,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:41:48,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802249671] [2023-04-02 23:41:48,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:41:48,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:41:49,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:41:49,385 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-04-02 23:41:49,385 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:41:49,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802249671] [2023-04-02 23:41:49,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802249671] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:41:49,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:41:49,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 23:41:49,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168189521] [2023-04-02 23:41:49,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:41:49,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 23:41:49,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:41:49,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 23:41:49,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-02 23:41:49,387 INFO L87 Difference]: Start difference. First operand 1234 states and 1867 transitions. Second operand has 7 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (25), 4 states have call predecessors, (25), 3 states have call successors, (25) [2023-04-02 23:41:49,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:41:49,662 INFO L93 Difference]: Finished difference Result 2313 states and 3586 transitions. [2023-04-02 23:41:49,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 23:41:49,662 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (25), 4 states have call predecessors, (25), 3 states have call successors, (25) Word has length 131 [2023-04-02 23:41:49,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:41:49,670 INFO L225 Difference]: With dead ends: 2313 [2023-04-02 23:41:49,671 INFO L226 Difference]: Without dead ends: 1234 [2023-04-02 23:41:49,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-04-02 23:41:49,677 INFO L413 NwaCegarLoop]: 614 mSDtfsCounter, 211 mSDsluCounter, 2838 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 3452 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 23:41:49,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 3452 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 23:41:49,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1234 states. [2023-04-02 23:41:49,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1234 to 1234. [2023-04-02 23:41:49,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1234 states, 811 states have (on average 1.4882860665844637) internal successors, (1207), 863 states have internal predecessors, (1207), 306 states have call successors, (306), 108 states have call predecessors, (306), 116 states have return successors, (322), 298 states have call predecessors, (322), 298 states have call successors, (322) [2023-04-02 23:41:49,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1234 states to 1234 states and 1835 transitions. [2023-04-02 23:41:49,777 INFO L78 Accepts]: Start accepts. Automaton has 1234 states and 1835 transitions. Word has length 131 [2023-04-02 23:41:49,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:41:49,777 INFO L495 AbstractCegarLoop]: Abstraction has 1234 states and 1835 transitions. [2023-04-02 23:41:49,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (25), 4 states have call predecessors, (25), 3 states have call successors, (25) [2023-04-02 23:41:49,778 INFO L276 IsEmpty]: Start isEmpty. Operand 1234 states and 1835 transitions. [2023-04-02 23:41:49,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-04-02 23:41:49,780 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:41:49,780 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:41:49,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-02 23:41:49,780 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:41:49,781 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:41:49,781 INFO L85 PathProgramCache]: Analyzing trace with hash 2066963752, now seen corresponding path program 1 times [2023-04-02 23:41:49,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:41:49,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351794153] [2023-04-02 23:41:49,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:41:49,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:41:49,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:41:50,353 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-04-02 23:41:50,353 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:41:50,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351794153] [2023-04-02 23:41:50,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351794153] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:41:50,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:41:50,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 23:41:50,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234973651] [2023-04-02 23:41:50,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:41:50,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 23:41:50,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:41:50,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 23:41:50,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-02 23:41:50,356 INFO L87 Difference]: Start difference. First operand 1234 states and 1835 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 5 states have call successors, (30), 4 states have call predecessors, (30), 4 states have return successors, (26), 5 states have call predecessors, (26), 4 states have call successors, (26) [2023-04-02 23:41:52,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:41:52,439 INFO L93 Difference]: Finished difference Result 2182 states and 3256 transitions. [2023-04-02 23:41:52,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-02 23:41:52,439 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 5 states have call successors, (30), 4 states have call predecessors, (30), 4 states have return successors, (26), 5 states have call predecessors, (26), 4 states have call successors, (26) Word has length 133 [2023-04-02 23:41:52,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:41:52,447 INFO L225 Difference]: With dead ends: 2182 [2023-04-02 23:41:52,448 INFO L226 Difference]: Without dead ends: 1304 [2023-04-02 23:41:52,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-04-02 23:41:52,452 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 980 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 3115 mSolverCounterSat, 399 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1059 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 3514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 399 IncrementalHoareTripleChecker+Valid, 3115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-04-02 23:41:52,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1059 Valid, 501 Invalid, 3514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [399 Valid, 3115 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-04-02 23:41:52,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1304 states. [2023-04-02 23:41:52,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1304 to 1261. [2023-04-02 23:41:52,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1261 states, 829 states have (on average 1.482509047044632) internal successors, (1229), 885 states have internal predecessors, (1229), 307 states have call successors, (307), 113 states have call predecessors, (307), 124 states have return successors, (333), 298 states have call predecessors, (333), 299 states have call successors, (333) [2023-04-02 23:41:52,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1261 states to 1261 states and 1869 transitions. [2023-04-02 23:41:52,530 INFO L78 Accepts]: Start accepts. Automaton has 1261 states and 1869 transitions. Word has length 133 [2023-04-02 23:41:52,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:41:52,532 INFO L495 AbstractCegarLoop]: Abstraction has 1261 states and 1869 transitions. [2023-04-02 23:41:52,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 5 states have call successors, (30), 4 states have call predecessors, (30), 4 states have return successors, (26), 5 states have call predecessors, (26), 4 states have call successors, (26) [2023-04-02 23:41:52,532 INFO L276 IsEmpty]: Start isEmpty. Operand 1261 states and 1869 transitions. [2023-04-02 23:41:52,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-04-02 23:41:52,534 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:41:52,534 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:41:52,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-02 23:41:52,534 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:41:52,535 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:41:52,535 INFO L85 PathProgramCache]: Analyzing trace with hash -496682767, now seen corresponding path program 1 times [2023-04-02 23:41:52,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:41:52,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473664763] [2023-04-02 23:41:52,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:41:52,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:41:52,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:41:52,905 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-04-02 23:41:52,905 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:41:52,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473664763] [2023-04-02 23:41:52,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473664763] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:41:52,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:41:52,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 23:41:52,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738268962] [2023-04-02 23:41:52,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:41:52,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 23:41:52,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:41:52,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 23:41:52,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-02 23:41:52,910 INFO L87 Difference]: Start difference. First operand 1261 states and 1869 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (27), 4 states have call predecessors, (27), 2 states have call successors, (27) [2023-04-02 23:41:53,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:41:53,385 INFO L93 Difference]: Finished difference Result 1301 states and 1926 transitions. [2023-04-02 23:41:53,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 23:41:53,385 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (27), 4 states have call predecessors, (27), 2 states have call successors, (27) Word has length 137 [2023-04-02 23:41:53,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:41:53,394 INFO L225 Difference]: With dead ends: 1301 [2023-04-02 23:41:53,394 INFO L226 Difference]: Without dead ends: 1284 [2023-04-02 23:41:53,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-04-02 23:41:53,397 INFO L413 NwaCegarLoop]: 576 mSDtfsCounter, 632 mSDsluCounter, 939 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 633 SdHoareTripleChecker+Valid, 1515 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 23:41:53,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [633 Valid, 1515 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 23:41:53,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1284 states. [2023-04-02 23:41:53,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1284 to 1265. [2023-04-02 23:41:53,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1265 states, 833 states have (on average 1.4801920768307324) internal successors, (1233), 889 states have internal predecessors, (1233), 307 states have call successors, (307), 113 states have call predecessors, (307), 124 states have return successors, (333), 298 states have call predecessors, (333), 299 states have call successors, (333) [2023-04-02 23:41:53,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1265 states to 1265 states and 1873 transitions. [2023-04-02 23:41:53,471 INFO L78 Accepts]: Start accepts. Automaton has 1265 states and 1873 transitions. Word has length 137 [2023-04-02 23:41:53,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:41:53,471 INFO L495 AbstractCegarLoop]: Abstraction has 1265 states and 1873 transitions. [2023-04-02 23:41:53,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (27), 4 states have call predecessors, (27), 2 states have call successors, (27) [2023-04-02 23:41:53,472 INFO L276 IsEmpty]: Start isEmpty. Operand 1265 states and 1873 transitions. [2023-04-02 23:41:53,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-04-02 23:41:53,473 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:41:53,474 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:41:53,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-02 23:41:53,474 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:41:53,474 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:41:53,474 INFO L85 PathProgramCache]: Analyzing trace with hash 2102711004, now seen corresponding path program 1 times [2023-04-02 23:41:53,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:41:53,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439876588] [2023-04-02 23:41:53,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:41:53,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:41:53,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:41:53,865 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-04-02 23:41:53,865 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:41:53,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439876588] [2023-04-02 23:41:53,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439876588] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:41:53,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:41:53,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-02 23:41:53,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426805296] [2023-04-02 23:41:53,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:41:53,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 23:41:53,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:41:53,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 23:41:53,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-02 23:41:53,868 INFO L87 Difference]: Start difference. First operand 1265 states and 1873 transitions. Second operand has 8 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 2 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (29), 4 states have call predecessors, (29), 1 states have call successors, (29) [2023-04-02 23:41:54,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:41:54,074 INFO L93 Difference]: Finished difference Result 1286 states and 1899 transitions. [2023-04-02 23:41:54,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-02 23:41:54,075 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 2 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (29), 4 states have call predecessors, (29), 1 states have call successors, (29) Word has length 145 [2023-04-02 23:41:54,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:41:54,083 INFO L225 Difference]: With dead ends: 1286 [2023-04-02 23:41:54,083 INFO L226 Difference]: Without dead ends: 1269 [2023-04-02 23:41:54,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-02 23:41:54,087 INFO L413 NwaCegarLoop]: 579 mSDtfsCounter, 10 mSDsluCounter, 3455 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 4034 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 23:41:54,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 4034 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 23:41:54,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1269 states. [2023-04-02 23:41:54,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1269 to 1265. [2023-04-02 23:41:54,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1265 states, 833 states have (on average 1.4765906362545018) internal successors, (1230), 889 states have internal predecessors, (1230), 307 states have call successors, (307), 113 states have call predecessors, (307), 124 states have return successors, (333), 298 states have call predecessors, (333), 299 states have call successors, (333) [2023-04-02 23:41:54,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1265 states to 1265 states and 1870 transitions. [2023-04-02 23:41:54,164 INFO L78 Accepts]: Start accepts. Automaton has 1265 states and 1870 transitions. Word has length 145 [2023-04-02 23:41:54,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:41:54,165 INFO L495 AbstractCegarLoop]: Abstraction has 1265 states and 1870 transitions. [2023-04-02 23:41:54,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 2 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (29), 4 states have call predecessors, (29), 1 states have call successors, (29) [2023-04-02 23:41:54,166 INFO L276 IsEmpty]: Start isEmpty. Operand 1265 states and 1870 transitions. [2023-04-02 23:41:54,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-04-02 23:41:54,168 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:41:54,168 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:41:54,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-02 23:41:54,168 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:41:54,169 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:41:54,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1815697015, now seen corresponding path program 1 times [2023-04-02 23:41:54,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:41:54,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239012441] [2023-04-02 23:41:54,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:41:54,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:41:54,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:41:56,928 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-04-02 23:41:56,928 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:41:56,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239012441] [2023-04-02 23:41:56,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239012441] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 23:41:56,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [608333862] [2023-04-02 23:41:56,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:41:56,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:41:56,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:41:56,937 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 23:41:56,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-02 23:41:57,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:41:57,472 INFO L262 TraceCheckSpWp]: Trace formula consists of 2980 conjuncts, 23 conjunts are in the unsatisfiable core [2023-04-02 23:41:57,493 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 23:41:59,918 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-04-02 23:41:59,919 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 23:42:04,080 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-04-02 23:42:04,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [608333862] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 23:42:04,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [978756294] [2023-04-02 23:42:04,109 INFO L159 IcfgInterpreter]: Started Sifa with 141 locations of interest [2023-04-02 23:42:04,109 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 23:42:04,113 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 23:42:04,117 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 23:42:04,118 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 23:42:06,653 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 184 for LOIs [2023-04-02 23:42:07,300 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 239 for LOIs [2023-04-02 23:42:10,319 INFO L197 IcfgInterpreter]: Interpreting procedure runTest with input of size 239 for LOIs [2023-04-02 23:42:14,993 WARN L176 XnfTransformerHelper]: Simplifying disjunction of 248063 conjuctions. This might take some time...